96 



III. Mittheilungen aus Instituten, Gesellschaften etc. 



1. Zoological Society of London. 



1st February, 1881. • — Mr. F. M. Balfour, F. R. S., read a paper 

 on the evolution of the placenta and made some observations on the possi- 

 bility of employing the characters of this organ in the classification of the 

 Mammals. — Mr. Sc later read notes on some Birds collected by Mr. E. 

 F. im Thurn in British Guiana, amongst which was an example of a new 

 species of Agelaeus, proposed to be called A. im-thurni, after its discoverer. 

 — Mr. W. T. Blanford, F.R.S., read an account of a collection of Rep- 

 tiles and Frogs made at Singapore by Dr. W. B. Dennys. In this collection 

 were two new species of Ophidians, which were named respectively Cylindro- 

 phis lineatus and Simotes dennysi, and two new Frogs, which the author pro- 

 posed to call Rana laticeps and Rhacophorns dennysi. — Mr. A. D. Bartlett 

 read an account of a peculiar habit of the Darter [Plottis anhinget) , in casting 

 up parts of the epithelial lining of its stomach, as observed by him in the 

 specimen now living in the Society's collection. — A communication was 

 read from Mr. A. Heneage Cocks, F.Z.S., containing notes on the breed- 

 ing of Otters, as observed by him in specimens living in his possession. — 

 The Secretary read a paper by the late Mr. Arthur O'Shaughnessy, con- 

 taining an account of a large collection of Lizards made by Mr. C. Buckley 

 in Ecuador. The collection was stated to be of great interest, both on ac- 

 count of the number of new species it contained, and the fresh material it 

 afi"orded for the study of species already known. Mr. O'Shaughnessy had 

 given last year a partial notice of this collection, confined, however, to a 

 preliminary list of the species of Anolis identified. The present paper gave 

 the results of a study of the whole collection, and was not restricted to the 

 description of the new forms, but enumerated all the species, for the pur- 

 pose of recording additional remarks and revisions which appeared neces- 

 sary. In it 27 species were mentioned, 10 of which were new. — Mr. G. 

 A. Boulenger read an account of a new species of Enyalius in the Brus- 

 sels Museum, from Ecuador, which he proposed to name Enyalius oshavgh- 

 nessyi. — Lieut. -Col. H. H. Godwin-Austen, F. R. S., read the first 

 part of a memoir on the Land-Shells collected on the island of Socotra by 

 Prof. I. B. Balfour. The present communication comprised an account of 

 the species of Cyclostomaceae found on the Island. — P. L. S dater, 

 Secretary. 



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